///*
// * Copyright 1999-2018 Alibaba Group Holding Ltd.
// *
// * Licensed under the Apache License, Version 2.0 (the "License");
// * you may not use this file except in compliance with the License.
// * You may obtain a copy of the License at
// *
// *      http://www.apache.org/licenses/LICENSE-2.0
// *
// * Unless required by applicable law or agreed to in writing, software
// * distributed under the License is distributed on an "AS IS" BASIS,
// * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// * See the License for the specific language governing permissions and
// * limitations under the License.
// */
//package com.alibaba.csp.sentinel.dashboard.controller;
//
//import com.alibaba.csp.sentinel.dashboard.auth.AuthAction;
//import com.alibaba.csp.sentinel.dashboard.auth.AuthService.PrivilegeType;
//import com.alibaba.csp.sentinel.dashboard.client.SentinelApiClient;
//import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
//import com.alibaba.csp.sentinel.dashboard.discovery.AppManagement;
//import com.alibaba.csp.sentinel.dashboard.domain.Result;
//import com.alibaba.csp.sentinel.dashboard.repository.rule.InMemoryRuleRepositoryAdapter;
//import com.alibaba.csp.sentinel.dashboard.rule.nacos.NacosConfigUtil;
//import com.alibaba.csp.sentinel.dashboard.rule.nacos.RuleNacosProvider;
//import com.alibaba.csp.sentinel.dashboard.rule.nacos.RuleNacosPublisher;
//import com.alibaba.csp.sentinel.util.StringUtil;
//import com.alibaba.fastjson.JSON;
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.web.bind.annotation.*;
//
//import java.util.ArrayList;
//import java.util.Date;
//import java.util.List;
//import java.util.concurrent.ExecutionException;
//
///**
// * Flow rule controller.
// *
// * @author leyou
// * @author Eric Zhao
// */
//@RestController
//@RequestMapping(value = "/v1/flow/1")
//public class FlowControllerV1Test {
//
//    private final Logger logger = LoggerFactory.getLogger(FlowControllerV1Test.class);
//
//    @Autowired
//    private InMemoryRuleRepositoryAdapter<FlowRuleEntity> repository;
//    @Autowired
//    private AppManagement appManagement;
//
//    @Autowired
//    private SentinelApiClient sentinelApiClient;
//
//    @Autowired
//    private RuleNacosProvider ruleProvider;
//
//    @Autowired
//    private RuleNacosPublisher rulePublisher;
//
//    @GetMapping("/rules")
//    @AuthAction(PrivilegeType.READ_RULE)
//    public Result<List<FlowRuleEntity>> apiQueryMachineRules(@RequestParam String app,
//                                                             @RequestParam String ip,
//                                                             @RequestParam Integer port) {
//        if (StringUtil.isEmpty(app)) {
//            return Result.ofFail(-1, "app can't be null or empty");
//        }
//        if (StringUtil.isEmpty(ip)) {
//            return Result.ofFail(-1, "ip can't be null or empty");
//        }
//        if (port == null) {
//            return Result.ofFail(-1, "port can't be null");
//        }
//        if (!appManagement.isValidMachineOfApp(app, ip)) {
//            return Result.ofFail(-1, "given ip does not belong to given app");
//        }
//        try {
//            String ruleStr = ruleProvider.getRules(app + NacosConfigUtil.FLOW_DATA_ID_POSTFIX);
//            List<FlowRuleEntity> rules = new ArrayList<>();
//            if (ruleStr != null) {
//                rules = JSON.parseArray(ruleStr, FlowRuleEntity.class);
//                if (rules != null && !rules.isEmpty()) {
//                    for (FlowRuleEntity entity : rules) {
//                        entity.setApp(app);
//                    }
//                }
//            }
//            rules = repository.saveAll(rules);
//            return Result.ofSuccess(rules);
//        } catch (Throwable throwable) {
//            logger.error("Error when querying flow rules", throwable);
//            return Result.ofThrowable(-1, throwable);
//        }
//    }
//
//    private <R> Result<R> checkEntityInternal(FlowRuleEntity entity) {
//        if (StringUtil.isBlank(entity.getApp())) {
//            return Result.ofFail(-1, "app can't be null or empty");
//        }
//        if (StringUtil.isBlank(entity.getIp())) {
//            return Result.ofFail(-1, "ip can't be null or empty");
//        }
//        if (entity.getPort() == null) {
//            return Result.ofFail(-1, "port can't be null");
//        }
//        if (!appManagement.isValidMachineOfApp(entity.getApp(), entity.getIp())) {
//            return Result.ofFail(-1, "given ip does not belong to given app");
//        }
//        if (StringUtil.isBlank(entity.getLimitApp())) {
//            return Result.ofFail(-1, "limitApp can't be null or empty");
//        }
//        if (StringUtil.isBlank(entity.getResource())) {
//            return Result.ofFail(-1, "resource can't be null or empty");
//        }
//        if (entity.getGrade() == null) {
//            return Result.ofFail(-1, "grade can't be null");
//        }
//        if (entity.getGrade() != 0 && entity.getGrade() != 1) {
//            return Result.ofFail(-1, "grade must be 0 or 1, but " + entity.getGrade() + " got");
//        }
//        if (entity.getCount() == null || entity.getCount() < 0) {
//            return Result.ofFail(-1, "count should be at lease zero");
//        }
//        if (entity.getStrategy() == null) {
//            return Result.ofFail(-1, "strategy can't be null");
//        }
//        if (entity.getStrategy() != 0 && StringUtil.isBlank(entity.getRefResource())) {
//            return Result.ofFail(-1, "refResource can't be null or empty when strategy!=0");
//        }
//        if (entity.getControlBehavior() == null) {
//            return Result.ofFail(-1, "controlBehavior can't be null");
//        }
//        int controlBehavior = entity.getControlBehavior();
//        if (controlBehavior == 1 && entity.getWarmUpPeriodSec() == null) {
//            return Result.ofFail(-1, "warmUpPeriodSec can't be null when controlBehavior==1");
//        }
//        if (controlBehavior == 2 && entity.getMaxQueueingTimeMs() == null) {
//            return Result.ofFail(-1, "maxQueueingTimeMs can't be null when controlBehavior==2");
//        }
//        if (entity.isClusterMode() && entity.getClusterConfig() == null) {
//            return Result.ofFail(-1, "cluster config should be valid");
//        }
//        return null;
//    }
//
//    @PostMapping("/rule")
//    @AuthAction(PrivilegeType.WRITE_RULE)
//    public Result<FlowRuleEntity> apiAddFlowRule(@RequestBody FlowRuleEntity entity) {
//        Result<FlowRuleEntity> checkResult = checkEntityInternal(entity);
//        if (checkResult != null) {
//            return checkResult;
//        }
//        entity.setId(null);
//        Date date = new Date();
//        entity.setGmtCreate(date);
//        entity.setGmtModified(date);
//        entity.setLimitApp(entity.getLimitApp().trim());
//        entity.setResource(entity.getResource().trim());
//        try {
//            entity = repository.save(entity);
//
//            publishRules(entity.getApp());
//            return Result.ofSuccess(entity);
//        } catch (Throwable t) {
//            Throwable e = t instanceof ExecutionException ? t.getCause() : t;
//            logger.error("Failed to add new flow rule, app={}, ip={}", entity.getApp(), entity.getIp(), e);
//            return Result.ofFail(-1, e.getMessage());
//        }
//    }
//
//    @PutMapping("/save.json")
//    @AuthAction(PrivilegeType.WRITE_RULE)
//    public Result<FlowRuleEntity> apiUpdateFlowRule(Long id, String app,
//                                                    String limitApp, String resource, Integer grade,
//                                                    Double count, Integer strategy, String refResource,
//                                                    Integer controlBehavior, Integer warmUpPeriodSec,
//                                                    Integer maxQueueingTimeMs) {
//        if (id == null) {
//            return Result.ofFail(-1, "id can't be null");
//        }
//        FlowRuleEntity entity = repository.findById(id);
//        if (entity == null) {
//            return Result.ofFail(-1, "id " + id + " dose not exist");
//        }
//        if (StringUtil.isNotBlank(app)) {
//            entity.setApp(app.trim());
//        }
//        if (StringUtil.isNotBlank(limitApp)) {
//            entity.setLimitApp(limitApp.trim());
//        }
//        if (StringUtil.isNotBlank(resource)) {
//            entity.setResource(resource.trim());
//        }
//        if (grade != null) {
//            if (grade != 0 && grade != 1) {
//                return Result.ofFail(-1, "grade must be 0 or 1, but " + grade + " got");
//            }
//            entity.setGrade(grade);
//        }
//        if (count != null) {
//            entity.setCount(count);
//        }
//        if (strategy != null) {
//            if (strategy != 0 && strategy != 1 && strategy != 2) {
//                return Result.ofFail(-1, "strategy must be in [0, 1, 2], but " + strategy + " got");
//            }
//            entity.setStrategy(strategy);
//            if (strategy != 0) {
//                if (StringUtil.isBlank(refResource)) {
//                    return Result.ofFail(-1, "refResource can't be null or empty when strategy!=0");
//                }
//                entity.setRefResource(refResource.trim());
//            }
//        }
//        if (controlBehavior != null) {
//            if (controlBehavior != 0 && controlBehavior != 1 && controlBehavior != 2) {
//                return Result.ofFail(-1, "controlBehavior must be in [0, 1, 2], but " + controlBehavior + " got");
//            }
//            if (controlBehavior == 1 && warmUpPeriodSec == null) {
//                return Result.ofFail(-1, "warmUpPeriodSec can't be null when controlBehavior==1");
//            }
//            if (controlBehavior == 2 && maxQueueingTimeMs == null) {
//                return Result.ofFail(-1, "maxQueueingTimeMs can't be null when controlBehavior==2");
//            }
//            entity.setControlBehavior(controlBehavior);
//            if (warmUpPeriodSec != null) {
//                entity.setWarmUpPeriodSec(warmUpPeriodSec);
//            }
//            if (maxQueueingTimeMs != null) {
//                entity.setMaxQueueingTimeMs(maxQueueingTimeMs);
//            }
//        }
//        Date date = new Date();
//        entity.setGmtModified(date);
//        try {
//            entity = repository.save(entity);
//            if (entity == null) {
//                return Result.ofFail(-1, "save entity fail: null");
//            }
//
//            publishRules(entity.getApp());
//            return Result.ofSuccess(entity);
//        } catch (Throwable t) {
//            Throwable e = t instanceof ExecutionException ? t.getCause() : t;
//            logger.error("Error when updating flow rules, app={}, ip={}, ruleId={}", entity.getApp(),
//                    entity.getIp(), id, e);
//            return Result.ofFail(-1, e.getMessage());
//        }
//    }
//
//    @DeleteMapping("/delete.json")
//    @AuthAction(PrivilegeType.WRITE_RULE)
//    public Result<Long> apiDeleteFlowRule(Long id) {
//
//        if (id == null) {
//            return Result.ofFail(-1, "id can't be null");
//        }
//        FlowRuleEntity oldEntity = repository.findById(id);
//        if (oldEntity == null) {
//            return Result.ofSuccess(null);
//        }
//
//        try {
//            repository.delete(id);
//        } catch (Exception e) {
//            return Result.ofFail(-1, e.getMessage());
//        }
//        try {
//            publishRules(oldEntity.getApp());
//            return Result.ofSuccess(id);
//        } catch (Throwable t) {
//            Throwable e = t instanceof ExecutionException ? t.getCause() : t;
//            logger.error("Error when deleting flow rules, app={}, ip={}, id={}", oldEntity.getApp(),
//                    oldEntity.getIp(), id, e);
//            return Result.ofFail(-1, e.getMessage());
//        }
//    }
//
//    private void publishRules(String app) {
//        List<FlowRuleEntity> rules = repository.findAllByApp(app);
//        String ruleStr = JSON.toJSONString(rules);
//        rulePublisher.publish(app + NacosConfigUtil.FLOW_DATA_ID_POSTFIX, ruleStr);
//    }
//}
